A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5960-00-960-6805
NSN 6135-01-497-4516
NSN 6145-01-612-1749
NSN 5930-00-959-3466
NSN 5960-01-505-2426
NSN 5985-00-140-1788
NSN 5910-00-476-6677
NSN 5990-01-485-0260
NSN 5965-00-455-7581
NSN 5999-01-071-1884
NSN 6220-00-453-3179
NSN 5905-01-526-3801